diff --git a/README.md b/README.md
index 8348b3f..b7fa765 100644
--- a/README.md
+++ b/README.md
@@ -38,7 +38,6 @@ csv_folder='csv/examples/'
 output_docs_folder='output_docs/CINECA_dataset/'
 
 #### VCF Conversion config parameters ####
-num_variants=100000
 reference_genome='GRCh37' # Choose one between NCBI36, GRCh37, GRCh38
 ```
 
@@ -62,7 +61,7 @@ First option will delete "_id" entries generated by mongoDB:
 ```bash
 docker exec ri-tools-mongo mongoexport --jsonArray --uri "mongodb://root:example@127.0.0.1:27017/beacon?authSource=admin" --collection genomicVariations | sed '/"_id":/s/"_id":[^,]*,//g' > genomicVariations.json
 ```
-The second one will keep the "_id" entries generated by mongoDB:
+The second option, our **recommended one**, will keep the "_id" entries generated by mongoDB:
 ```bash
 docker exec ri-tools-mongo mongoexport --jsonArray --uri "mongodb://root:example@127.0.0.1:27017/beacon?authSource=admin" --collection genomicVariations > genomicVariations.json
 ```